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公开(公告)号：US20110063707A1
公开(公告)日：2011-03-17
申请号：US12993206
申请日：2008-06-06
申请人： James C. Mansfield , Baoliang Wang
发明人： James C. Mansfield , Baoliang Wang
IPC分类号： G02F1/01
CPC分类号： G02F1/0131 , G02F1/0102 , G02F1/0136
摘要： A support system for a vibrating component of an optical assembly that is adjacent to a frame, wherein the component is driven to vibrate along an X-direction of a three-dimensional Cartesian coordinate system. The support system includes a support member connected to the frame. The support system has contact elements that are adjustable for movement into and out of contact with the vibrating component to constrain motion of the vibrating component in the Y-direction and in the Z-direction, without constraining motion of the vibrating component in the X-direction.
摘要翻译： 一种用于光学组件的与框架相邻的振动部件的支撑系统，其中所述部件被驱动以沿着三维笛卡尔坐标系的X方向振动。 支撑系统包括连接到框架的支撑构件。 支撑系统具有可调节的接触元件，用于与振动部件移动和脱离接触，以约束Y方向和Z方向上的振动部件的运动，而不限制X轴方向上的振动部件的运动， 方向。
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公开(公告)号：US07312869B2
公开(公告)日：2007-12-25
申请号：US11155825
申请日：2005-06-16
申请人： Baoliang Wang
发明人： Baoliang Wang
IPC分类号： G01J4/00
CPC分类号： G01N21/23
摘要： The disclosure is directed to precise measurement of out-of-plane birefringence properties of samples of transparent optical material. Two angled-apart light beams are passed through a selected location of a sample optical element. One of the beams is incident to the sample surface. The characteristics of the beams are detected after passing through the sample, and the information detected is processed to determine the out-of-plane birefringence.
摘要翻译： 本发明涉及透明光学材料样品的平面外双折射性质的精确测量。 两个角度分开的光束通过样品光学元件的选定位置。 梁中的一个入射到样品表面。 在通过样品之后检测光束的特性，并且处理检测到的信息以确定平面外双折射。
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公开(公告)号：US06970278B1
公开(公告)日：2005-11-29
申请号：US09623954
申请日：1999-03-16
申请人： Tudor N. Buican
发明人： Tudor N. Buican
CPC分类号： G02F1/0131 , G02F1/0123 , G02F2201/16
摘要： A system and method for exploiting the dependance of a photoelastic modulator's (PEM's) resonance frequency on temperature (attributable to driving amplitude and to ambient temperature) to generally improve the performance of PEMs. In one embodiment there is provided a method and system for efficiently driving a series of multiple PEMs. To this end, each of the PEMs in a stack are separately tuned, as by controlling the power dissipated in each PEM, so that the resonance frequencies of all of the PEMs converge to a common frequency. Thus, all of the PEMs are simultaneously at resonance to ensure maximum efficiency and to maintain a selected total retardation amplitude. In another embodiment of the present invention, a single-element PEM is controlled in a manner to account for the subtle changes in the PEM's resonance frequency. To this end a control method and system is provided to keep constant both the retardation amplitude of the PEM and the actual operating frequency of the PEM, which frequency need not necessarily be the resonant frequency.
摘要翻译： 利用光弹性调制器（PEM）共振频率对温度（归因于驱动振幅和环境温度）的依赖性的系统和方法通常提高了PEM的性能。 在一个实施例中，提供了一种用于有效驱动一系列多个PEM的方法和系统。 为此，通过控制每个PEM中消耗的功率，单独调谐堆叠中的每个PEM，使得所有PEM的谐振频率收敛到公共频率。 因此，所有PEMs同时处于共振状态以确保最大效率并保持选定的总延迟幅度。 在本发明的另一个实施例中，单元件PEM以控制PEM谐振频率微妙变化的方式进行控制。 为此，提供了一种控制方法和系统，以保持PEM的延迟振幅和PEM的实际工作频率恒定，该频率不必一定是谐振频率。
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公开(公告)号：US20040156049A1
公开(公告)日：2004-08-12
申请号：US10364006
申请日：2003-02-10
发明人： Andrew H. Breninger , Christopher O. Griffiths , Douglas C. Mark , Artemiy Mikheyev , Baoliang Wang
IPC分类号： G02B001/00 , G01J004/00
CPC分类号： G02B27/0006 , G01J1/02 , G01J1/0252 , G01N21/23 , G03F7/70933
摘要： Purging of a light beam path in an effective manner that minimizes the affect of the purging requirement on system throughput. In one embodiment, the invention is incorporated into a birefringence measurement system that has several components for directing light through a sample optical element and thereafter detecting and analyzing the light. The segment of the beam path through the sample is isolated to reduce the volume that requires continual purging.
摘要翻译： 以有效的方式清除光束路径，以最大限度地减少净化需求对系统吞吐量的影响。 在一个实施例中，本发明被并入双折射测量系统中，该系统具有多个用于将光引导通过样品光学元件的组件，然后检测和分析光。 通过样品的光束路径的段被隔离以减少需要连续吹扫的体积。
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公开(公告)号：US11054672B2
公开(公告)日：2021-07-06
申请号：US16206398
申请日：2018-11-30
发明人： John Freudenthal , Baoliang Wang
摘要： An apparatus includes a photoelastic modulator (PEM) optical element including a first driving axis and a second driving axis arranged at a selected angle with respect to each other and perpendicular to an optical axis, wherein the first driving axis and the second driving axis extend respective predetermined non-equal lengths that correspond to respective predetermined non-equal natural first and second PEM frequencies f1 and f2. Methods of manufacture and operation are also disclosed.
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公开(公告)号：US20190171042A1
公开(公告)日：2019-06-06
申请号：US16206398
申请日：2018-11-30
发明人： John Freudenthal , Baoliang Wang
IPC分类号： G02F1/01
摘要： An apparatus includes a photoelastic modulator (PEM) optical element including a first driving axis and a second driving axis arranged at a selected angle with respect to each other and perpendicular to an optical axis, wherein the first driving axis and the second driving axis extend respective predetermined non-equal lengths that correspond to respective predetermined non-equal natural first and second PEM frequencies f1 and f2. Methods of manufacture and operation are also disclosed.
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公开(公告)号：US20170307517A1
公开(公告)日：2017-10-26
申请号：US15612564
申请日：2017-06-02
发明人： John Freudenthal , Andy Leadbetter , Baoliang Wang
CPC分类号： G01N21/23 , G01J4/00 , G01N21/21 , G01N2201/0621 , G01N2201/0683
摘要： This disclosure is generally directed to systems for imaging polarization properties of optical-material samples. As one aspect, there is provided a system for precise, simultaneous imaging of both the in-plane and out-of-plane birefringence properties of sample material over a wide range of incidence angles. The spatially resolved imaging approach described here is amenable to determination of a wide range of polarimetric properties, in addition to the in-plane and out-of-plane birefringence measure discussed as a preferred embodiment.
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公开(公告)号：US08743360B2
公开(公告)日：2014-06-03
申请号：US13970463
申请日：2013-08-19
发明人： Baoliang Wang
摘要： A method of controlling a light beam in an optical system includes a light source that directs a collimated light beam along a path, through a sample, and toward the active area of a stationary detector. The method includes the step selectively moving a lens into the path of the light beam for spreading the beam in instances where the path of the beam is altered by the sample between the source and the stationary detector. The detector, therefore, is held stationary. Adjustment means are provided for increasing the intensity characteristic of the light that reaches the detector to account for a decrease in intensity that occurs when the lens is in the path of the light beam to spread the beam.
摘要翻译： 一种控制光学系统中的光束的方法包括：光源，其沿着路径，通过样本并朝向固定检测器的有效区域引导准直光束。 该方法包括步骤：选择性地将透镜移动到光束的路径中，以在光束的路径被源和静态检测器之间的样本改变的情况下扩散光束。 因此，检测器保持静止。 提供了调节装置，用于增加到达检测器的光的强度特性，以解决当透镜在光束的路径中扩散光束时发生的强度的降低。
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公开(公告)号：US08582101B2
公开(公告)日：2013-11-12
申请号：US13002650
申请日：2009-07-02
申请人： Baoliang Wang
发明人： Baoliang Wang
IPC分类号： G01J4/00
CPC分类号： G01N21/23 , G02F1/0131
摘要： Improving the throughput of systems for measuring birefringence of optical samples includes techniques for directing multiple beams through the photoelastic modulator component of the system so that, along with expanded detection mechanisms to accommodate the multiple beams, the heretofore scanning (via a single beam) of a line across the sample is considerably enlarged so that several lines covering a “swath” of the sample area is scanned by the system of the present invention.
摘要翻译： 提高用于测量光学样本的双折射的系统的通量包括用于将多个光束引导通过系统的光弹性调制器部件的技术，使得随着扩展的检测机构以适应多个光束，迄今为止扫描（经由单个光束） 跨越样品的线被相当大地放大，使得覆盖样品区域的“条”的几条线被本发明的系统扫描。
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公开(公告)号：US08520207B2
公开(公告)日：2013-08-27
申请号：US13588352
申请日：2012-08-17
申请人： Baoliang Wang
发明人： Baoliang Wang
摘要： A system for controlling a light beam in an optical setup includes a light source that directs a collimated light beam along a path, through a sample, and toward the active area of a stationary detector. A lens is selectively movable into the path of the light beam for spreading the beam in instances where the path of the beam is altered by the sample between the source and the stationary detector. The detector, therefore, is held stationary. Adjustment mechanisms are provided for increasing the intensity characteristic of the light that reaches the detector to account for a decrease in intensity that occurs when the lens is in the path of the light beam to spread the beam.
摘要翻译： 用于控制光学装置中的光束的系统包括光源，该光源将准直光束沿着路径，通过样本并朝向静止检测器的有效区域引导。 在光源的路径被源和静态检测器之间的样本改变的情况下，透镜可选择性地移动到光束的路径中，用于扩展光束。 因此，检测器保持静止。 提供调节机构用于增加到达检测器的光的强度特性，以解决当透镜在光束的路径中扩展光束时发生的强度的降低。
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